1 /* Remote debugging interface for M32R/SDI.
3 Copyright (C) 2003-2014 Free Software Foundation, Inc.
5 Contributed by Renesas Technology Co.
6 Written by Kei Sakamoto <sakamoto.kei@renesas.com>.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdbthread.h"
36 #include <netinet/in.h>
38 #include <sys/types.h>
42 #include "cli/cli-utils.h"
46 /* Descriptor for I/O to remote machine. */
48 static struct serial *sdi_desc = NULL;
50 #define SDI_TIMEOUT 30
55 static char chip_name[64];
58 static unsigned long last_pc_addr = 0xffffffff;
59 static unsigned char last_pc_addr_data[2];
61 static int mmu_on = 0;
63 static int use_ib_breakpoints = 1;
65 #define MAX_BREAKPOINTS 1024
66 static int max_ib_breakpoints;
67 static unsigned long bp_address[MAX_BREAKPOINTS];
68 static unsigned char bp_data[MAX_BREAKPOINTS][4];
71 static const unsigned char dbt_bp_entry[] = {
72 0x10, 0xe0, 0x70, 0x00
75 #define MAX_ACCESS_BREAKS 4
76 static int max_access_breaks;
77 static unsigned long ab_address[MAX_ACCESS_BREAKS];
78 static unsigned int ab_type[MAX_ACCESS_BREAKS];
79 static unsigned int ab_size[MAX_ACCESS_BREAKS];
80 static CORE_ADDR hit_watchpoint_addr = 0;
82 static int interrupted = 0;
84 /* Forward data declarations */
85 extern struct target_ops m32r_ops;
87 /* This is the ptid we use while we're connected to the remote. Its
88 value is arbitrary, as the target doesn't have a notion of
89 processes or threads, but we need something non-null to place in
91 static ptid_t remote_m32r_ptid;
97 #define SDI_READ_CPU_REG 4
98 #define SDI_WRITE_CPU_REG 5
99 #define SDI_READ_MEMORY 6
100 #define SDI_WRITE_MEMORY 7
101 #define SDI_EXEC_CPU 8
102 #define SDI_STOP_CPU 9
103 #define SDI_WAIT_FOR_READY 10
104 #define SDI_GET_ATTR 11
105 #define SDI_SET_ATTR 12
106 #define SDI_STATUS 13
109 #define SDI_ATTR_NAME 1
110 #define SDI_ATTR_BRK 2
111 #define SDI_ATTR_ABRK 3
112 #define SDI_ATTR_CACHE 4
113 #define SDI_CACHE_TYPE_M32102 0
114 #define SDI_CACHE_TYPE_CHAOS 1
115 #define SDI_ATTR_MEM_ACCESS 5
116 #define SDI_MEM_ACCESS_DEBUG_DMA 0
117 #define SDI_MEM_ACCESS_MON_CODE 1
130 #define SDI_REG_R10 10
131 #define SDI_REG_R11 11
132 #define SDI_REG_R12 12
133 #define SDI_REG_FP 13
134 #define SDI_REG_LR 14
135 #define SDI_REG_SP 15
136 #define SDI_REG_PSW 16
137 #define SDI_REG_CBR 17
138 #define SDI_REG_SPI 18
139 #define SDI_REG_SPU 19
140 #define SDI_REG_CR4 20
141 #define SDI_REG_EVB 21
142 #define SDI_REG_BPC 22
143 #define SDI_REG_CR7 23
144 #define SDI_REG_BBPSW 24
145 #define SDI_REG_CR9 25
146 #define SDI_REG_CR10 26
147 #define SDI_REG_CR11 27
148 #define SDI_REG_CR12 28
149 #define SDI_REG_WR 29
150 #define SDI_REG_BBPC 30
151 #define SDI_REG_PBP 31
152 #define SDI_REG_ACCH 32
153 #define SDI_REG_ACCL 33
154 #define SDI_REG_ACC1H 34
155 #define SDI_REG_ACC1L 35
158 /* Low level communication functions. */
160 /* Check an ack packet from the target. */
169 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
174 if (c != '+') /* error */
180 /* Send data to the target and check an ack packet. */
182 send_data (const void *buf, int len)
187 if (serial_write (sdi_desc, buf, len) != 0)
190 if (get_ack () == -1)
196 /* Receive data from the target. */
198 recv_data (void *buf, int len)
208 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
213 ((unsigned char *) buf)[total++] = c;
219 /* Store unsigned long parameter on packet. */
221 store_long_parameter (void *buf, long val)
224 memcpy (buf, &val, 4);
228 send_cmd (unsigned char cmd)
230 unsigned char buf[1];
233 return send_data (buf, 1);
237 send_one_arg_cmd (unsigned char cmd, unsigned char arg1)
239 unsigned char buf[2];
243 return send_data (buf, 2);
247 send_two_arg_cmd (unsigned char cmd, unsigned char arg1, unsigned long arg2)
249 unsigned char buf[6];
253 store_long_parameter (buf + 2, arg2);
254 return send_data (buf, 6);
258 send_three_arg_cmd (unsigned char cmd, unsigned long arg1, unsigned long arg2,
261 unsigned char buf[13];
264 store_long_parameter (buf + 1, arg1);
265 store_long_parameter (buf + 5, arg2);
266 store_long_parameter (buf + 9, arg3);
267 return send_data (buf, 13);
271 recv_char_data (void)
280 recv_long_data (void)
289 /* Check if MMU is on. */
291 check_mmu_status (void)
295 /* Read PC address. */
296 if (send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BPC) == -1)
298 val = recv_long_data ();
299 if ((val & 0xc0000000) == 0x80000000)
305 /* Read EVB address. */
306 if (send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_EVB) == -1)
308 val = recv_long_data ();
309 if ((val & 0xc0000000) == 0x80000000)
319 /* This is called not only when we first attach, but also when the
320 user types "run" after having attached. */
322 m32r_create_inferior (struct target_ops *ops, char *execfile,
323 char *args, char **env, int from_tty)
328 error (_("Cannot pass arguments to remote STDEBUG process"));
330 if (execfile == 0 || exec_bfd == 0)
331 error (_("No executable file specified"));
334 fprintf_unfiltered (gdb_stdlog, "m32r_create_inferior(%s,%s)\n", execfile,
337 entry_pt = bfd_get_start_address (exec_bfd);
339 /* The "process" (board) is already stopped awaiting our commands, and
340 the program is already downloaded. We just set its PC and go. */
342 clear_proceed_status ();
344 /* Tell wait_for_inferior that we've started a new process. */
345 init_wait_for_inferior ();
347 /* Set up the "saved terminal modes" of the inferior
348 based on what modes we are starting it with. */
349 target_terminal_init ();
351 /* Install inferior's terminal modes. */
352 target_terminal_inferior ();
354 regcache_write_pc (get_current_regcache (), entry_pt);
357 /* Open a connection to a remote debugger.
358 NAME is the filename used for communication. */
361 m32r_open (char *args, int from_tty)
363 struct hostent *host_ent;
364 struct sockaddr_in server_addr;
365 char *port_str, hostname[256];
371 fprintf_unfiltered (gdb_stdlog, "m32r_open(%d)\n", from_tty);
373 target_preopen (from_tty);
375 push_target (&m32r_ops);
378 xsnprintf (hostname, sizeof (hostname), "localhost:%d", SDIPORT);
381 port_str = strchr (args, ':');
382 if (port_str == NULL)
383 xsnprintf (hostname, sizeof (hostname), "%s:%d", args, SDIPORT);
385 xsnprintf (hostname, sizeof (hostname), "%s", args);
388 sdi_desc = serial_open (hostname);
390 error (_("Connection refused."));
392 if (get_ack () == -1)
393 error (_("Cannot connect to SDI target."));
395 if (send_cmd (SDI_OPEN) == -1)
396 error (_("Cannot connect to SDI target."));
398 /* Get maximum number of ib breakpoints. */
399 send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_BRK);
400 max_ib_breakpoints = recv_char_data ();
402 printf_filtered ("Max IB Breakpoints = %d\n", max_ib_breakpoints);
404 /* Initialize breakpoints. */
405 for (i = 0; i < MAX_BREAKPOINTS; i++)
406 bp_address[i] = 0xffffffff;
408 /* Get maximum number of access breaks. */
409 send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_ABRK);
410 max_access_breaks = recv_char_data ();
412 printf_filtered ("Max Access Breaks = %d\n", max_access_breaks);
414 /* Initialize access breask. */
415 for (i = 0; i < MAX_ACCESS_BREAKS; i++)
416 ab_address[i] = 0x00000000;
420 /* Get the name of chip on target board. */
421 send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_NAME);
422 recv_data (chip_name, 64);
425 printf_filtered ("Remote %s connected to %s\n", target_shortname,
429 /* Close out all files and local state before this target loses control. */
432 m32r_close (struct target_ops *self)
435 fprintf_unfiltered (gdb_stdlog, "m32r_close()\n");
439 send_cmd (SDI_CLOSE);
440 serial_close (sdi_desc);
444 inferior_ptid = null_ptid;
445 delete_thread_silent (remote_m32r_ptid);
449 /* Tell the remote machine to resume. */
452 m32r_resume (struct target_ops *ops,
453 ptid_t ptid, int step, enum gdb_signal sig)
455 unsigned long pc_addr, bp_addr, ab_addr;
457 unsigned char buf[13];
463 fprintf_unfiltered (gdb_stdlog, "\nm32r_resume(step)\n");
465 fprintf_unfiltered (gdb_stdlog, "\nm32r_resume(cont)\n");
470 pc_addr = regcache_read_pc (get_current_regcache ());
472 fprintf_unfiltered (gdb_stdlog, "pc <= 0x%lx\n", pc_addr);
474 /* At pc address there is a parallel instruction with +2 offset,
475 so we have to make it a serial instruction or avoid it. */
476 if (pc_addr == last_pc_addr)
478 /* Avoid a parallel nop. */
479 if (last_pc_addr_data[0] == 0xf0 && last_pc_addr_data[1] == 0x00)
482 /* Now we can forget this instruction. */
483 last_pc_addr = 0xffffffff;
485 /* Clear a parallel bit. */
488 buf[0] = SDI_WRITE_MEMORY;
489 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
490 store_long_parameter (buf + 1, pc_addr);
492 store_long_parameter (buf + 1, pc_addr - 1);
493 store_long_parameter (buf + 5, 1);
494 buf[9] = last_pc_addr_data[0] & 0x7f;
500 send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BPC, pc_addr);
507 send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PBP, pc_addr | 1);
512 send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PBP, 0x00000000);
515 if (use_ib_breakpoints)
516 ib_breakpoints = max_ib_breakpoints;
520 /* Set ib breakpoints. */
521 for (i = 0; i < ib_breakpoints; i++)
523 bp_addr = bp_address[i];
525 if (bp_addr == 0xffffffff)
529 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
530 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4,
533 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4,
536 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8080 + 4 * i, 4, bp_addr);
539 /* Set dbt breakpoints. */
540 for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++)
542 bp_addr = bp_address[i];
544 if (bp_addr == 0xffffffff)
548 bp_addr &= 0x7fffffff;
550 /* Write DBT instruction. */
551 buf[0] = SDI_WRITE_MEMORY;
552 store_long_parameter (buf + 1, (bp_addr & 0xfffffffc));
553 store_long_parameter (buf + 5, 4);
554 if ((bp_addr & 2) == 0 && bp_addr != (pc_addr & 0xfffffffc))
556 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
558 buf[9] = dbt_bp_entry[0];
559 buf[10] = dbt_bp_entry[1];
560 buf[11] = dbt_bp_entry[2];
561 buf[12] = dbt_bp_entry[3];
565 buf[9] = dbt_bp_entry[3];
566 buf[10] = dbt_bp_entry[2];
567 buf[11] = dbt_bp_entry[1];
568 buf[12] = dbt_bp_entry[0];
573 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
575 if ((bp_addr & 2) == 0)
577 buf[9] = dbt_bp_entry[0];
578 buf[10] = dbt_bp_entry[1];
579 buf[11] = bp_data[i][2] & 0x7f;
580 buf[12] = bp_data[i][3];
584 buf[9] = bp_data[i][0];
585 buf[10] = bp_data[i][1];
586 buf[11] = dbt_bp_entry[0];
587 buf[12] = dbt_bp_entry[1];
592 if ((bp_addr & 2) == 0)
594 buf[9] = bp_data[i][0];
595 buf[10] = bp_data[i][1] & 0x7f;
596 buf[11] = dbt_bp_entry[1];
597 buf[12] = dbt_bp_entry[0];
601 buf[9] = dbt_bp_entry[1];
602 buf[10] = dbt_bp_entry[0];
603 buf[11] = bp_data[i][2];
604 buf[12] = bp_data[i][3];
611 /* Set access breaks. */
612 for (i = 0; i < max_access_breaks; i++)
614 ab_addr = ab_address[i];
616 if (ab_addr == 0x00000000)
620 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
624 case 0: /* write watch */
625 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
628 case 1: /* read watch */
629 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
632 case 2: /* access watch */
633 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
642 case 0: /* write watch */
643 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
646 case 1: /* read watch */
647 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
650 case 2: /* access watch */
651 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
658 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8180 + 4 * i, 4, ab_addr);
661 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8200 + 4 * i, 4,
665 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8280 + 4 * i, 4,
669 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8300 + 4 * i, 4,
673 /* Resume program. */
674 send_cmd (SDI_EXEC_CPU);
676 /* Without this, some commands which require an active target (such as kill)
677 won't work. This variable serves (at least) double duty as both the pid
678 of the target process (if it has such), and as a flag indicating that a
679 target is active. These functions should be split out into seperate
680 variables, especially since GDB will someday have a notion of debugging
681 several processes. */
682 inferior_ptid = remote_m32r_ptid;
683 add_thread_silent (remote_m32r_ptid);
688 /* Wait until the remote machine stops, then return,
689 storing status in STATUS just as `wait' would. */
692 gdb_cntrl_c (int signo)
695 fprintf_unfiltered (gdb_stdlog, "interrupt\n");
700 m32r_wait (struct target_ops *ops,
701 ptid_t ptid, struct target_waitstatus *status, int options)
703 static RETSIGTYPE (*prev_sigint) ();
704 unsigned long bp_addr, pc_addr;
707 unsigned char buf[13];
711 fprintf_unfiltered (gdb_stdlog, "m32r_wait()\n");
713 status->kind = TARGET_WAITKIND_EXITED;
714 status->value.sig = GDB_SIGNAL_0;
717 prev_sigint = signal (SIGINT, gdb_cntrl_c);
719 /* Wait for ready. */
720 buf[0] = SDI_WAIT_FOR_READY;
721 if (serial_write (sdi_desc, buf, 1) != 0)
722 error (_("Remote connection closed"));
726 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
728 error (_("Remote connection closed"));
730 if (c == '-') /* error */
732 status->kind = TARGET_WAITKIND_STOPPED;
733 status->value.sig = GDB_SIGNAL_HUP;
734 return inferior_ptid;
736 else if (c == '+') /* stopped */
740 ret = serial_write (sdi_desc, "!", 1); /* packet to interrupt */
742 ret = serial_write (sdi_desc, ".", 1); /* packet to wait */
744 error (_("Remote connection closed"));
747 status->kind = TARGET_WAITKIND_STOPPED;
749 status->value.sig = GDB_SIGNAL_INT;
751 status->value.sig = GDB_SIGNAL_TRAP;
754 signal (SIGINT, prev_sigint);
758 /* Recover parallel bit. */
759 if (last_pc_addr != 0xffffffff)
761 buf[0] = SDI_WRITE_MEMORY;
762 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
763 store_long_parameter (buf + 1, last_pc_addr);
765 store_long_parameter (buf + 1, last_pc_addr - 1);
766 store_long_parameter (buf + 5, 1);
767 buf[9] = last_pc_addr_data[0];
769 last_pc_addr = 0xffffffff;
772 if (use_ib_breakpoints)
773 ib_breakpoints = max_ib_breakpoints;
777 /* Set back pc by 2 if m32r is stopped with dbt. */
778 last_pc_addr = 0xffffffff;
779 send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BPC);
780 pc_addr = recv_long_data () - 2;
781 for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++)
783 if (pc_addr == bp_address[i])
785 send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BPC, pc_addr);
787 /* If there is a parallel instruction with +2 offset at pc
788 address, we have to take care of it later. */
789 if ((pc_addr & 0x2) != 0)
791 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
793 if ((bp_data[i][2] & 0x80) != 0)
795 last_pc_addr = pc_addr;
796 last_pc_addr_data[0] = bp_data[i][2];
797 last_pc_addr_data[1] = bp_data[i][3];
802 if ((bp_data[i][1] & 0x80) != 0)
804 last_pc_addr = pc_addr;
805 last_pc_addr_data[0] = bp_data[i][1];
806 last_pc_addr_data[1] = bp_data[i][0];
814 /* Remove ib breakpoints. */
815 for (i = 0; i < ib_breakpoints; i++)
817 if (bp_address[i] != 0xffffffff)
818 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4,
821 /* Remove dbt breakpoints. */
822 for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++)
824 bp_addr = bp_address[i];
825 if (bp_addr != 0xffffffff)
828 bp_addr &= 0x7fffffff;
829 buf[0] = SDI_WRITE_MEMORY;
830 store_long_parameter (buf + 1, bp_addr & 0xfffffffc);
831 store_long_parameter (buf + 5, 4);
832 buf[9] = bp_data[i][0];
833 buf[10] = bp_data[i][1];
834 buf[11] = bp_data[i][2];
835 buf[12] = bp_data[i][3];
840 /* Remove access breaks. */
841 hit_watchpoint_addr = 0;
842 for (i = 0; i < max_access_breaks; i++)
844 if (ab_address[i] != 0x00000000)
846 buf[0] = SDI_READ_MEMORY;
847 store_long_parameter (buf + 1, 0xffff8100 + 4 * i);
848 store_long_parameter (buf + 5, 4);
849 serial_write (sdi_desc, buf, 9);
850 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
851 if (c != '-' && recv_data (buf, 4) != -1)
853 if (gdbarch_byte_order (target_gdbarch ()) == BFD_ENDIAN_BIG)
855 if ((buf[3] & 0x1) == 0x1)
856 hit_watchpoint_addr = ab_address[i];
860 if ((buf[0] & 0x1) == 0x1)
861 hit_watchpoint_addr = ab_address[i];
865 send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4,
871 fprintf_unfiltered (gdb_stdlog, "pc => 0x%lx\n", pc_addr);
873 return inferior_ptid;
876 /* Terminate the open connection to the remote debugger.
877 Use this when you want to detach and do something else
880 m32r_detach (struct target_ops *ops, const char *args, int from_tty)
883 fprintf_unfiltered (gdb_stdlog, "m32r_detach(%d)\n", from_tty);
885 m32r_resume (ops, inferior_ptid, 0, GDB_SIGNAL_0);
887 /* Calls m32r_close to do the real work. */
890 fprintf_unfiltered (gdb_stdlog, "Ending remote %s debugging\n",
894 /* Return the id of register number REGNO. */
897 get_reg_id (int regno)
916 /* Fetch register REGNO, or all registers if REGNO is -1.
917 Returns errno value. */
919 m32r_fetch_register (struct target_ops *ops,
920 struct regcache *regcache, int regno)
922 struct gdbarch *gdbarch = get_regcache_arch (regcache);
923 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
924 unsigned long val, val2, regid;
929 regno < gdbarch_num_regs (get_regcache_arch (regcache));
931 m32r_fetch_register (ops, regcache, regno);
935 gdb_byte buffer[MAX_REGISTER_SIZE];
937 regid = get_reg_id (regno);
938 send_one_arg_cmd (SDI_READ_CPU_REG, regid);
939 val = recv_long_data ();
941 if (regid == SDI_REG_PSW)
943 send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BBPSW);
944 val2 = recv_long_data ();
945 val = ((0x00cf & val2) << 8) | ((0xcf00 & val) >> 8);
949 fprintf_unfiltered (gdb_stdlog, "m32r_fetch_register(%d,0x%08lx)\n",
952 /* We got the number the register holds, but gdb expects to see a
953 value in the target byte ordering. */
954 store_unsigned_integer (buffer, 4, byte_order, val);
955 regcache_raw_supply (regcache, regno, buffer);
960 /* Store register REGNO, or all if REGNO == 0.
961 Return errno value. */
963 m32r_store_register (struct target_ops *ops,
964 struct regcache *regcache, int regno)
967 ULONGEST regval, tmp;
972 regno < gdbarch_num_regs (get_regcache_arch (regcache));
974 m32r_store_register (ops, regcache, regno);
978 regcache_cooked_read_unsigned (regcache, regno, ®val);
979 regid = get_reg_id (regno);
981 if (regid == SDI_REG_PSW)
983 unsigned long psw, bbpsw;
985 send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_PSW);
986 psw = recv_long_data ();
988 send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BBPSW);
989 bbpsw = recv_long_data ();
991 tmp = (0x00cf & psw) | ((0x00cf & regval) << 8);
992 send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PSW, tmp);
994 tmp = (0x0030 & bbpsw) | ((0xcf00 & regval) >> 8);
995 send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BBPSW, tmp);
999 send_two_arg_cmd (SDI_WRITE_CPU_REG, regid, regval);
1003 fprintf_unfiltered (gdb_stdlog, "m32r_store_register(%d,0x%08lu)\n",
1004 regno, (unsigned long) regval);
1008 /* Get ready to modify the registers array. On machines which store
1009 individual registers, this doesn't need to do anything. On machines
1010 which store all the registers in one fell swoop, this makes sure
1011 that registers contains all the registers from the program being
1015 m32r_prepare_to_store (struct target_ops *self, struct regcache *regcache)
1017 /* Do nothing, since we can store individual regs. */
1019 fprintf_unfiltered (gdb_stdlog, "m32r_prepare_to_store()\n");
1023 m32r_files_info (struct target_ops *target)
1025 const char *file = "nothing";
1029 file = bfd_get_filename (exec_bfd);
1030 printf_filtered ("\tAttached to %s running program %s\n",
1035 /* Helper for m32r_xfer_partial that handles memory transfers.
1036 Arguments are like target_xfer_partial. */
1038 static enum target_xfer_status
1039 m32r_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
1040 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1042 unsigned long taddr;
1043 unsigned char buf[0x2000];
1050 if ((taddr & 0xa0000000) == 0x80000000)
1051 taddr &= 0x7fffffff;
1056 if (writebuf != NULL)
1057 fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory(%s,%s,write)\n",
1058 paddress (target_gdbarch (), memaddr),
1061 fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory(%s,%s,read)\n",
1062 paddress (target_gdbarch (), memaddr),
1066 if (writebuf != NULL)
1068 buf[0] = SDI_WRITE_MEMORY;
1069 store_long_parameter (buf + 1, taddr);
1070 store_long_parameter (buf + 5, len);
1073 memcpy (buf + 9, writebuf, len);
1074 ret = send_data (buf, len + 9) - 9;
1078 if (serial_write (sdi_desc, buf, 9) != 0)
1081 fprintf_unfiltered (gdb_stdlog,
1082 "m32r_xfer_memory() failed\n");
1085 ret = send_data (writebuf, len);
1090 buf[0] = SDI_READ_MEMORY;
1091 store_long_parameter (buf + 1, taddr);
1092 store_long_parameter (buf + 5, len);
1093 if (serial_write (sdi_desc, buf, 9) != 0)
1096 fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() failed\n");
1100 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
1101 if (c < 0 || c == '-')
1104 fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() failed\n");
1108 ret = recv_data (readbuf, len);
1114 fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() fails\n");
1115 return TARGET_XFER_E_IO;
1119 return TARGET_XFER_OK;
1122 /* Target to_xfer_partial implementation. */
1124 static enum target_xfer_status
1125 m32r_xfer_partial (struct target_ops *ops, enum target_object object,
1126 const char *annex, gdb_byte *readbuf,
1127 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1128 ULONGEST *xfered_len)
1132 case TARGET_OBJECT_MEMORY:
1133 return m32r_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
1136 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1137 readbuf, writebuf, offset, len,
1143 m32r_kill (struct target_ops *ops)
1146 fprintf_unfiltered (gdb_stdlog, "m32r_kill()\n");
1148 inferior_ptid = null_ptid;
1149 delete_thread_silent (remote_m32r_ptid);
1154 /* Clean up when a program exits.
1156 The program actually lives on in the remote processor's RAM, and may be
1157 run again without a download. Don't leave it full of breakpoint
1161 m32r_mourn_inferior (struct target_ops *ops)
1164 fprintf_unfiltered (gdb_stdlog, "m32r_mourn_inferior()\n");
1166 remove_breakpoints ();
1167 generic_mourn_inferior ();
1171 m32r_insert_breakpoint (struct target_ops *ops,
1172 struct gdbarch *gdbarch,
1173 struct bp_target_info *bp_tgt)
1175 CORE_ADDR addr = bp_tgt->placed_address;
1177 unsigned char buf[13];
1181 fprintf_unfiltered (gdb_stdlog, "m32r_insert_breakpoint(%s,...)\n",
1182 paddress (gdbarch, addr));
1184 if (use_ib_breakpoints)
1185 ib_breakpoints = max_ib_breakpoints;
1189 for (i = 0; i < MAX_BREAKPOINTS; i++)
1191 if (bp_address[i] == 0xffffffff)
1193 bp_address[i] = addr;
1194 if (i >= ib_breakpoints)
1196 buf[0] = SDI_READ_MEMORY;
1198 store_long_parameter (buf + 1, addr & 0xfffffffc);
1200 store_long_parameter (buf + 1, addr & 0x7ffffffc);
1201 store_long_parameter (buf + 5, 4);
1202 serial_write (sdi_desc, buf, 9);
1203 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
1205 recv_data (bp_data[i], 4);
1211 error (_("Too many breakpoints"));
1216 m32r_remove_breakpoint (struct target_ops *ops,
1217 struct gdbarch *gdbarch,
1218 struct bp_target_info *bp_tgt)
1220 CORE_ADDR addr = bp_tgt->placed_address;
1224 fprintf_unfiltered (gdb_stdlog, "m32r_remove_breakpoint(%s)\n",
1225 paddress (gdbarch, addr));
1227 for (i = 0; i < MAX_BREAKPOINTS; i++)
1229 if (bp_address[i] == addr)
1231 bp_address[i] = 0xffffffff;
1240 m32r_load (struct target_ops *self, char *args, int from_tty)
1242 struct cleanup *old_chain;
1249 struct timeval start_time, end_time;
1250 unsigned long data_count; /* Number of bytes transferred to memory. */
1251 static RETSIGTYPE (*prev_sigint) ();
1253 /* for direct tcp connections, we can do a fast binary download. */
1258 while (*args != '\000')
1262 args = skip_spaces (args);
1266 while ((*args != '\000') && !isspace (*args))
1269 if (*args != '\000')
1274 else if (strncmp (arg, "-quiet", strlen (arg)) == 0)
1276 else if (strncmp (arg, "-nostart", strlen (arg)) == 0)
1279 error (_("Unknown option `%s'"), arg);
1283 filename = get_exec_file (1);
1285 pbfd = gdb_bfd_open (filename, gnutarget, -1);
1288 perror_with_name (filename);
1291 old_chain = make_cleanup_bfd_unref (pbfd);
1293 if (!bfd_check_format (pbfd, bfd_object))
1294 error (_("\"%s\" is not an object file: %s"), filename,
1295 bfd_errmsg (bfd_get_error ()));
1297 gettimeofday (&start_time, NULL);
1301 prev_sigint = signal (SIGINT, gdb_cntrl_c);
1303 for (section = pbfd->sections; section; section = section->next)
1305 if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
1307 bfd_vma section_address;
1308 bfd_size_type section_size;
1312 section_address = bfd_section_lma (pbfd, section);
1313 section_size = bfd_get_section_size (section);
1317 if ((section_address & 0xa0000000) == 0x80000000)
1318 section_address &= 0x7fffffff;
1322 printf_filtered ("[Loading section %s at 0x%lx (%d bytes)]\n",
1323 bfd_get_section_name (pbfd, section),
1324 (unsigned long) section_address,
1325 (int) section_size);
1329 data_count += section_size;
1332 while (section_size > 0)
1334 char unsigned buf[0x1000 + 9];
1337 count = min (section_size, 0x1000);
1339 buf[0] = SDI_WRITE_MEMORY;
1340 store_long_parameter (buf + 1, section_address);
1341 store_long_parameter (buf + 5, count);
1343 bfd_get_section_contents (pbfd, section, buf + 9, fptr, count);
1344 if (send_data (buf, count + 9) <= 0)
1345 error (_("Error while downloading %s section."),
1346 bfd_get_section_name (pbfd, section));
1350 printf_unfiltered (".");
1353 printf_unfiltered ("\n");
1356 gdb_flush (gdb_stdout);
1359 section_address += count;
1361 section_size -= count;
1367 if (!quiet && !interrupted)
1369 printf_unfiltered ("done.\n");
1370 gdb_flush (gdb_stdout);
1376 printf_unfiltered ("Interrupted.\n");
1382 signal (SIGINT, prev_sigint);
1384 gettimeofday (&end_time, NULL);
1386 /* Make the PC point at the start address. */
1388 regcache_write_pc (get_current_regcache (),
1389 bfd_get_start_address (exec_bfd));
1391 inferior_ptid = null_ptid; /* No process now. */
1392 delete_thread_silent (remote_m32r_ptid);
1394 /* This is necessary because many things were based on the PC at the time
1395 that we attached to the monitor, which is no longer valid now that we
1396 have loaded new code (and just changed the PC). Another way to do this
1397 might be to call normal_stop, except that the stack may not be valid,
1398 and things would get horribly confused... */
1400 clear_symtab_users (0);
1404 entry = bfd_get_start_address (pbfd);
1407 printf_unfiltered ("[Starting %s at 0x%lx]\n", filename,
1408 (unsigned long) entry);
1411 print_transfer_performance (gdb_stdout, data_count, 0, &start_time,
1414 do_cleanups (old_chain);
1418 m32r_stop (struct target_ops *self, ptid_t ptid)
1421 fprintf_unfiltered (gdb_stdlog, "m32r_stop()\n");
1423 send_cmd (SDI_STOP_CPU);
1429 /* Tell whether this target can support a hardware breakpoint. CNT
1430 is the number of hardware breakpoints already installed. This
1431 implements the target_can_use_hardware_watchpoint macro. */
1434 m32r_can_use_hw_watchpoint (struct target_ops *self,
1435 int type, int cnt, int othertype)
1437 return sdi_desc != NULL && cnt < max_access_breaks;
1440 /* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0
1441 for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write
1445 m32r_insert_watchpoint (struct target_ops *self,
1446 CORE_ADDR addr, int len, int type,
1447 struct expression *cond)
1452 fprintf_unfiltered (gdb_stdlog, "m32r_insert_watchpoint(%s,%d,%d)\n",
1453 paddress (target_gdbarch (), addr), len, type);
1455 for (i = 0; i < MAX_ACCESS_BREAKS; i++)
1457 if (ab_address[i] == 0x00000000)
1459 ab_address[i] = addr;
1466 error (_("Too many watchpoints"));
1471 m32r_remove_watchpoint (struct target_ops *self,
1472 CORE_ADDR addr, int len, int type,
1473 struct expression *cond)
1478 fprintf_unfiltered (gdb_stdlog, "m32r_remove_watchpoint(%s,%d,%d)\n",
1479 paddress (target_gdbarch (), addr), len, type);
1481 for (i = 0; i < MAX_ACCESS_BREAKS; i++)
1483 if (ab_address[i] == addr)
1485 ab_address[i] = 0x00000000;
1494 m32r_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
1498 if (hit_watchpoint_addr != 0x00000000)
1500 *addr_p = hit_watchpoint_addr;
1507 m32r_stopped_by_watchpoint (struct target_ops *ops)
1511 return m32r_stopped_data_address (¤t_target, &addr);
1514 /* Check to see if a thread is still alive. */
1517 m32r_thread_alive (struct target_ops *ops, ptid_t ptid)
1519 if (ptid_equal (ptid, remote_m32r_ptid))
1520 /* The main task is always alive. */
1526 /* Convert a thread ID to a string. Returns the string in a static
1530 m32r_pid_to_str (struct target_ops *ops, ptid_t ptid)
1532 static char buf[64];
1534 if (ptid_equal (remote_m32r_ptid, ptid))
1536 xsnprintf (buf, sizeof buf, "Thread <main>");
1540 return normal_pid_to_str (ptid);
1544 sdireset_command (char *args, int from_tty)
1547 fprintf_unfiltered (gdb_stdlog, "m32r_sdireset()\n");
1549 send_cmd (SDI_OPEN);
1551 inferior_ptid = null_ptid;
1552 delete_thread_silent (remote_m32r_ptid);
1557 sdistatus_command (char *args, int from_tty)
1559 unsigned char buf[4096];
1563 fprintf_unfiltered (gdb_stdlog, "m32r_sdireset()\n");
1568 send_cmd (SDI_STATUS);
1569 for (i = 0; i < 4096; i++)
1571 c = serial_readchar (sdi_desc, SDI_TIMEOUT);
1579 printf_filtered ("%s", buf);
1584 debug_chaos_command (char *args, int from_tty)
1586 unsigned char buf[3];
1588 buf[0] = SDI_SET_ATTR;
1589 buf[1] = SDI_ATTR_CACHE;
1590 buf[2] = SDI_CACHE_TYPE_CHAOS;
1596 use_debug_dma_command (char *args, int from_tty)
1598 unsigned char buf[3];
1600 buf[0] = SDI_SET_ATTR;
1601 buf[1] = SDI_ATTR_MEM_ACCESS;
1602 buf[2] = SDI_MEM_ACCESS_DEBUG_DMA;
1607 use_mon_code_command (char *args, int from_tty)
1609 unsigned char buf[3];
1611 buf[0] = SDI_SET_ATTR;
1612 buf[1] = SDI_ATTR_MEM_ACCESS;
1613 buf[2] = SDI_MEM_ACCESS_MON_CODE;
1619 use_ib_breakpoints_command (char *args, int from_tty)
1621 use_ib_breakpoints = 1;
1625 use_dbt_breakpoints_command (char *args, int from_tty)
1627 use_ib_breakpoints = 0;
1631 m32r_return_one (struct target_ops *target)
1636 /* Implementation of the to_has_execution method. */
1639 m32r_has_execution (struct target_ops *target, ptid_t the_ptid)
1644 /* Define the target subroutine names. */
1646 struct target_ops m32r_ops;
1649 init_m32r_ops (void)
1651 m32r_ops.to_shortname = "m32rsdi";
1652 m32r_ops.to_longname = "Remote M32R debugging over SDI interface";
1653 m32r_ops.to_doc = "Use an M32R board using SDI debugging protocol.";
1654 m32r_ops.to_open = m32r_open;
1655 m32r_ops.to_close = m32r_close;
1656 m32r_ops.to_detach = m32r_detach;
1657 m32r_ops.to_resume = m32r_resume;
1658 m32r_ops.to_wait = m32r_wait;
1659 m32r_ops.to_fetch_registers = m32r_fetch_register;
1660 m32r_ops.to_store_registers = m32r_store_register;
1661 m32r_ops.to_prepare_to_store = m32r_prepare_to_store;
1662 m32r_ops.to_xfer_partial = m32r_xfer_partial;
1663 m32r_ops.to_files_info = m32r_files_info;
1664 m32r_ops.to_insert_breakpoint = m32r_insert_breakpoint;
1665 m32r_ops.to_remove_breakpoint = m32r_remove_breakpoint;
1666 m32r_ops.to_can_use_hw_breakpoint = m32r_can_use_hw_watchpoint;
1667 m32r_ops.to_insert_watchpoint = m32r_insert_watchpoint;
1668 m32r_ops.to_remove_watchpoint = m32r_remove_watchpoint;
1669 m32r_ops.to_stopped_by_watchpoint = m32r_stopped_by_watchpoint;
1670 m32r_ops.to_stopped_data_address = m32r_stopped_data_address;
1671 m32r_ops.to_kill = m32r_kill;
1672 m32r_ops.to_load = m32r_load;
1673 m32r_ops.to_create_inferior = m32r_create_inferior;
1674 m32r_ops.to_mourn_inferior = m32r_mourn_inferior;
1675 m32r_ops.to_stop = m32r_stop;
1676 m32r_ops.to_log_command = serial_log_command;
1677 m32r_ops.to_thread_alive = m32r_thread_alive;
1678 m32r_ops.to_pid_to_str = m32r_pid_to_str;
1679 m32r_ops.to_stratum = process_stratum;
1680 m32r_ops.to_has_all_memory = m32r_return_one;
1681 m32r_ops.to_has_memory = m32r_return_one;
1682 m32r_ops.to_has_stack = m32r_return_one;
1683 m32r_ops.to_has_registers = m32r_return_one;
1684 m32r_ops.to_has_execution = m32r_has_execution;
1685 m32r_ops.to_magic = OPS_MAGIC;
1689 extern initialize_file_ftype _initialize_remote_m32r;
1692 _initialize_remote_m32r (void)
1698 /* Initialize breakpoints. */
1699 for (i = 0; i < MAX_BREAKPOINTS; i++)
1700 bp_address[i] = 0xffffffff;
1702 /* Initialize access breaks. */
1703 for (i = 0; i < MAX_ACCESS_BREAKS; i++)
1704 ab_address[i] = 0x00000000;
1706 add_target (&m32r_ops);
1708 add_com ("sdireset", class_obscure, sdireset_command,
1709 _("Reset SDI connection."));
1711 add_com ("sdistatus", class_obscure, sdistatus_command,
1712 _("Show status of SDI connection."));
1714 add_com ("debug_chaos", class_obscure, debug_chaos_command,
1715 _("Debug M32R/Chaos."));
1717 add_com ("use_debug_dma", class_obscure, use_debug_dma_command,
1718 _("Use debug DMA mem access."));
1719 add_com ("use_mon_code", class_obscure, use_mon_code_command,
1720 _("Use mon code mem access."));
1722 add_com ("use_ib_break", class_obscure, use_ib_breakpoints_command,
1723 _("Set breakpoints by IB break."));
1724 add_com ("use_dbt_break", class_obscure, use_dbt_breakpoints_command,
1725 _("Set breakpoints by dbt."));
1727 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
1729 remote_m32r_ptid = ptid_build (42000, 0, 42000);